<! DOCTYPE  html > < htmllang = " en" > < head> < metacharset = " UTF-8" > < metahttp-equiv = " X-UA-Compatible" content = " IE=edge" > < metaname = " viewport" content = " width=device-width, initial-scale=1.0" > < title> </ title> < style> 
        body  { 
            padding :  120px; 
        } 
        .music  { 
            width :  175px; 
            height :  100px; 
            display :  flex; 
        } 
        .music span  { 
            width :  6px; 
            border-radius :  18px; 
            margin-right :  6px; 
        } 
        .music span:nth-child(1)  { 
            
            animation :  bar1 2s 0.2s infinite linear; 
        } 
        .music span:nth-child(2)  { 
            animation :  bar2 2s 0.4s infinite linear; 
        } 
        .music span:nth-child(3)  { 
            animation :  bar3 2s 0.6s infinite linear; 
        } 
        .music span:nth-child(4)  { 
            animation :  bar4 2s 0.8s infinite linear; 
        } 
        .music span:nth-child(5)  { 
            animation :  bar5 2s 1.0s infinite linear; 
        } 
        .music span:nth-child(6)  { 
            animation :  bar6 2s 1.2s infinite linear; 
        } 
        .music span:nth-child(7)  { 
            animation :  bar7 2s 1.4s infinite linear; 
        } 
        .music span:nth-child(8)  { 
            animation :  bar8 2s 1.6s infinite linear; 
        } 
        .music span:nth-child(9)  { 
            animation :  bar9 2s 1.8s infinite linear; 
        } 
        @keyframes  bar1{ 
            0%  { 
                background :  #f677b0; 
                margin-top :  25%; 
                height :  10%; 
            } 
            50%  { 
                background :  #f677b0; 
                height :  100%; 
                margin-top :  0%; 
            } 
            100%  { 
                background :  #f677b0; 
                height :  10%; 
                margin-top :  25%; 
            } 
        } 
        @keyframes  bar2{ 
            0%  { 
                background :  #df7ff2; 
                margin-top :  25%; 
                height :  10%; 
            } 
            50%  { 
                background :  #df7ff2; 
                height :  100%; 
                margin-top :  0%; 
            } 
            100%  { 
                background :  #df7ff2; 
                height :  10%; 
                margin-top :  25%; 
            } 
        } 
        @keyframes  bar3{ 
            0%  { 
                background :  #8c7ff2; 
                margin-top :  25%; 
                height :  10%; 
            } 
            50%  { 
                background :  #8c7ff2; 
                height :  100%; 
                margin-top :  0%; 
            } 
            100%  { 
                background :  #8c7ff2; 
                height :  10%; 
                margin-top :  25%; 
            } 
        } 
        @keyframes  bar4{ 
            0%  { 
                background :  #7fd0f2; 
                margin-top :  25%; 
                height :  10%; 
            } 
            50%  { 
                background :  #7fd0f2; 
                height :  100%; 
                margin-top :  0%; 
            } 
            100%  { 
                background :  #7fd0f2; 
                height :  10%; 
                margin-top :  25%; 
            } 
        } 
        @keyframes  bar5{ 
            0%  { 
                background :  #7ff2d3; 
                margin-top :  25%; 
                height :  10%; 
            } 
            50%  { 
                background :  #7ff2d3; 
                height :  100%; 
                margin-top :  0%; 
            } 
            100%  { 
                background :  #7ff2d3; 
                height :  10%; 
                margin-top :  25%; 
            } 
        } 
        @keyframes  bar6{ 
            0%  { 
                background :  #7ff2a0; 
                margin-top :  25%; 
                height :  10%; 
            } 
            50%  { 
                background :  #7ff2a0; 
                height :  100%; 
                margin-top :  0%; 
            } 
            100%  { 
                background :  #7ff2a0; 
                height :  10%; 
                margin-top :  25%; 
            } 
        } 
        @keyframes  bar7{ 
            0%  { 
                background :  #adf27f; 
                margin-top :  25%; 
                height :  10%; 
            } 
            50%  { 
                background :  #adf27f; 
                height :  100%; 
                margin-top :  0%; 
            } 
            100%  { 
                background :  #adf27f; 
                height :  10%; 
                margin-top :  25%; 
            } 
        } 
        @keyframes  bar8{ 
            0%  { 
                background :  #e7f27f; 
                margin-top :  25%; 
                height :  10%; 
            } 
            50%  { 
                background :  #e7f27f; 
                height :  100%; 
                margin-top :  0%; 
            } 
            100%  { 
                background :  #e7f27f; 
                height :  10%; 
                margin-top :  25%; 
            } 
        } 
        @keyframes  bar9{ 
            0%  { 
                background :  #ecaa64; 
                margin-top :  25%; 
                height :  10%; 
            } 
            50%  { 
                background :  #ecaa64; 
                height :  100%; 
                margin-top :  0%; 
            } 
            100%  { 
                background :  #ecaa64; 
                height :  10%; 
                margin-top :  25%; 
            } 
        } 
 </ style> </ head> < body> < divclass = " music" > < span> </ span> < span> </ span> < span> </ span> < span> </ span> < span> </ span> < span> </ span> < span> </ span> < span> </ span> < span> </ span> </ div> </ body> </ html> 
 
<! DOCTYPE  html > < htmllang = " en" > < head> < metacharset = " UTF-8" > < metaname = " viewport" content = " width=device-width, initial-scale=1.0" > < metahttp-equiv = " X-UA-Compatible" content = " ie=edge" > < title> </ title> < style> 
        .wrap  { 
            margin :  120px 0 0 240px; 
            width :  75px; 
            height :  75px; 
            position :  relative; 
            
            
        } 
        .round  { 
            position :  absolute; 
            width :  13px; 
            height :  13px; 
            border-radius :  50%; 
            background-color :  rgb ( 241,  141,  157) ; 
            
            animation :  circleRound 2.8s ease infinite; 
            
            transform-origin :  50% 75px; 
        } 
        
        .round:nth-child(1)  { 
            z-index :  7; 
        } 
        
        
        .round:nth-child(2)  { 
            height :  12px; 
            width :  12px; 
            background-color :  rgb ( 199,  136,  185) ; 
            animation-delay :  .2s; 
            z-index :  6; 
        } 
        .round:nth-child(3)  { 
            height :  11px; 
            width :  11px; 
            background-color :  rgb ( 153,  69,  223) ; 
            animation-delay :  .4s; 
            z-index :  5; 
        } 
        .round:nth-child(4)  { 
            height :  10px; 
            width :  10px; 
            background-color :  rgb ( 69,  141,  223) ; 
            animation-delay :  .6s; 
            z-index :  4; 
        } 
        .round:nth-child(5)  { 
            height :  9px; 
            width :  9px; 
            background-color :  rgb ( 69,  223,  203) ; 
            animation-delay :  .8s; 
            z-index :  3; 
        } 
        .round:nth-child(6)  { 
            height :  8px; 
            width :  8px; 
            background-color :  rgb ( 100,  223,  69) ; 
            animation-delay :  1s; 
            z-index :  2; 
        } 
        .round:nth-child(7)  { 
            height :  7px; 
            width :  7px; 
            background-color :  rgb ( 223,  200,  69) ; 
            animation-delay :  1.2s; 
            z-index :  1; 
        } 
        @keyframes  circleRound{ 
            to  { 
                transform :  rotate ( 1turn) ; 
            } 
        } 
 </ style> </ head> < body> < divclass = " wrap" > < divclass = " round" > </ div> < divclass = " round" > </ div> < divclass = " round" > </ div> < divclass = " round" > </ div> < divclass = " round" > </ div> < divclass = " round" > </ div> < divclass = " round" > </ div> </ div> </ body> </ html> 
 
<! DOCTYPE  html > < htmllang = " en" > < head> < metacharset = " UTF-8" > < metahttp-equiv = " X-UA-Compatible" content = " IE=edge" > < metaname = " viewport" content = " width=device-width, initial-scale=1.0" > < title> </ title> < style> 
        
        .wrap  { 
            width :  600px; 
            height :  480px; 
            box-sizing :  border-box; 
            padding :  120px; 
            background-color :  #fff; 
            color :  transparent; 
            display :  flex; 
        } 
        h3  { 
            text-shadow :  0 0 0 #e00; 
            animation :  smoky 6s infinite; 
        } 
        @keyframes  smoky{ 
            60%  { 
                text-shadow :  0 0 40px #fff; 
            } 
            100%  { 
                text-shadow :  0 0 20px #fff; 
                
                transform :  translate3d ( 15rem,  -8rem,  0)  rotate ( -40deg)  skew ( 70deg)  scale ( 1.5) ; 
                opacity :  0; 
            } 
        } 
        h3:nth-child(1)  { 
            animation-delay :  1s; 
        } 
        h3:nth-child(2)  { 
            animation-delay :  1.4s; 
        } 
        h3:nth-child(3)  { 
            animation-delay :  1.8s; 
        } 
        h3:nth-child(4)  { 
            animation-delay :  2.2s; 
        } 
        h3:nth-child(5)  { 
            animation-delay :  2.6s; 
        } 
 </ style> </ head> < body> < divclass = " wrap" > < h3> </ h3> < h3> </ h3> < h3> </ h3> < h3> </ h3> < h3> </ h3> </ div> </ body> </ html> 
 
<! DOCTYPE  html > < htmllang = " en" > < head> < metacharset = " UTF-8" > < metahttp-equiv = " X-UA-Compatible" content = " IE=edge" > < metaname = " viewport" content = " width=device-width, initial-scale=1.0" > < title> </ title> < style> 
        body  { 
            background :  #fff; 
            padding :  120px; 
        } 
        button  { 
            display :  inline-block; 
            border :  none; 
            color :  #000; 
            cursor :  pointer; 
            margin :  12px 18px; 
            background :  rgb ( 0,  255,  0) ; 
            position :  relative; 
        } 
        span  { 
            display :  block; 
            padding :  18px 60px
        } 
        button::before,
        button::after  { 
            content :  "" ; 
            width :  0; 
            height :  2px; 
            position :  absolute; 
            transition :  all .2s linear; 
            background :  #e00
        } 
        span::before,
        span::after  { 
            content :  "" ; 
            width :  2px; 
            height :  0; 
            position :  absolute; 
            transition :  all .2s linear; 
            background :  #e00
        } 
        button:hover::before,
        button:hover::after  { 
            width :  100%
        } 
        button:hover span::before,
        button:hover span::after  { 
            height :  100%
        } 
        .btn1::before,
        .btn1::after  { 
            transition-delay :  .2s
        } 
        .btn1 span::before,
        .btn1 span::after  { 
            transition-delay :  0s
        } 
        .btn1::before  { 
            right :  0; 
            top :  0
        } 
        .btn1::after  { 
            left :  0; 
            bottom :  0
        } 
        .btn1 span::before  { 
            left :  0; 
            top :  0
        } 
        .btn1 span::after  { 
            right :  0; 
            bottom :  0
        } 
        .btn1:hover::before,
        .btn1:hover::after  { 
            transition-delay :  0s
        } 
        .btn1:hover span::before,
        .btn1:hover span::after  { 
            transition-delay :  .2s
        } 
        .btn2::before,
        .btn2::after  { 
            transition-delay :  0s
        } 
        .btn2 span::before,
        .btn2 span::after  { 
            transition-delay :  .2s
        } 
        .btn2::before  { 
            right :  0; 
            top :  0
        } 
        .btn2::after  { 
            left :  0; 
            bottom :  0
        } 
        .btn2 span::before  { 
            left :  0; 
            top :  0
        } 
        .btn2 span::after  { 
            right :  0; 
            bottom :  0
        } 
        .btn2:hover::before,
        .btn2:hover::after  { 
            transition-delay :  .2s
        } 
        .btn2:hover span::before,
        .btn2:hover span::after  { 
            transition-delay :  0s
        } 
        .btn3::after  { 
            left :  0; 
            bottom :  0; 
            transition-delay :  .6s
        } 
        .btn3 span::after  { 
            transition-delay :  .4s; 
            right :  0; 
            bottom :  0
        } 
        .btn3::before  { 
            right :  0; 
            top :  0; 
            transition-delay :  .2s
        } 
        .btn3 span::before  { 
            transition-delay :  0s; 
            left :  0; 
            top :  0
        } 
        .btn3:hover::after  { 
            transition-delay :  0s
        } 
        .btn3:hover span::after  { 
            transition-delay :  .2s
        } 
        .btn3:hover::before  { 
            transition-delay :  .4s
        } 
        .btn3:hover span::before  { 
            transition-delay :  .6s
        } 
        .btn4::after  { 
            right :  0; 
            bottom :  0; 
            transition-duration :  .4s
        } 
        .btn4 span::after  { 
            right :  0; 
            bottom :  0; 
            transition-duration :  .4s
        } 
        .btn4::before  { 
            left :  0; 
            top :  0; 
            transition-duration :  .4s
        } 
        .btn4 span::before  { 
            left :  0; 
            top :  0; 
            transition-duration :  .4s
        } 
        .btn5::after  { 
            left :  0; 
            bottom :  0; 
            transition-duration :  .4s
        } 
        .btn5 span::after  { 
            right :  0; 
            top :  0; 
            transition-duration :  .4s
        } 
        .btn5::before  { 
            right :  0; 
            top :  0; 
            transition-duration :  .4s
        } 
        .btn5 span::before  { 
            left :  0; 
            bottom :  0; 
            transition-duration :  .4s
        } 
        .btn6::before  { 
            left :  50%; 
            top :  0; 
            transition-duration :  .4s
        } 
        .btn6::after  { 
            left :  50%; 
            bottom :  0; 
            transition-duration :  .4s
        } 
        .btn6 span::before  { 
            left :  0; 
            top :  50%; 
            transition-duration :  .4s
        } 
        .btn6 span::after  { 
            right :  0; 
            top :  50%; 
            transition-duration :  .4s
        } 
        .btn6:hover::before,
        .btn6:hover::after  { 
            left :  0
        } 
        .btn6:hover span::before,
        .btn6:hover span::after  { 
            top :  0
        } 
 </ style> </ head> < body> < main> < buttonclass = " btn1" > < span> </ span> </ button> < buttonclass = " btn2" > < span> </ span> </ button> < buttonclass = " btn3" > < span> </ span> </ button> < buttonclass = " btn4" > < span> </ span> </ button> < buttonclass = " btn5" > < span> </ span> </ button> < buttonclass = " btn6" > < span> </ span> </ button> </ main> </ body> </ html> 
 
<! DOCTYPE  html > < htmllang = " en" > < head> < metacharset = " UTF-8" > < metahttp-equiv = " X-UA-Compatible" content = " IE=edge" > < metaname = " viewport" content = " width=device-width, initial-scale=1.0" > < title> </ title> < style> 
        body  { 
            padding :  180px; 
            background-color :  #ddd; 
        } 
        .item  { 
            box-sizing :  border-box; 
            display :  inline-flex; 
            align-items :  center; 
            height :  60px; 
            
            width :  60px; 
            margin :  4px 8px; 
            
            overflow :  hidden; 
            background :  #fff; 
            border-radius :  30px; 
            box-shadow :  0px 10px 10px rgba ( 0,  0,  0,  0.24) ; 
            transition :  all 0.5s; 
        } 
        .item:hover  { 
            width :  180px; 
            border :  none; 
        } 
        
        .first:hover .icon  { 
            background-color :  pink; 
        } 
        .second:hover .icon  { 
            background-color :  #e9e9e9; 
        } 
        .third:hover .icon  { 
            background-color :  pink; 
        } 
        .fouth:hover .icon  { 
            background-color :  #e9e9e9; 
        } 
        .icon  { 
            width :  60px; 
            height :  60px; 
            display :  flex; 
            justify-content :  center; 
            align-items :  center; 
            border-radius :  30px; 
            font-size :  28px; 
            position :  relative; 
            transition :  all 0.5s; 
            
            pointer-events :  none; 
        } 
        
        .item:nth-child(1) .icon::after  { 
            position :  absolute; 
            content :  '我是 A' ; 
            
            width :  fit-content; 
            
            word-break :  keep-all; 
            
            font-size :  medium; 
            left :  72px; 
            
            pointer-events :  auto; 
            cursor :  pointer; 
        } 
        .item:nth-child(2) .icon::after  { 
            position :  absolute; 
            content :  '我是 B, 不是 A' ; 
            width :  fit-content; 
            word-break :  keep-all; 
            font-size :  medium; 
            left :  72px; 
            pointer-events :  auto; 
            cursor :  pointer; 
        } 
        .item:nth-child(3) .icon::after  { 
            position :  absolute; 
            content :  '我是 C' ; 
            width :  fit-content; 
            word-break :  keep-all; 
            font-size :  medium; 
            left :  72px; 
            pointer-events :  auto; 
            cursor :  pointer; 
        } 
        .item:nth-child(4) .icon::after  { 
            position :  absolute; 
            content :  '我是 D' ; 
            width :  fit-content; 
            word-break :  keep-all; 
            font-size :  medium; 
            left :  72px; 
            pointer-events :  auto; 
            cursor :  pointer; 
        } 
        
        .icon:hover::after  { 
            text-decoration :  underline; 
        } 
 </ style> </ head> < body> < divclass = " item first" > < divonclick = " clickAfter ( '红桃' ) " style = " color :  #DD3B32; " class = " icon" > </ div> </ div> < divclass = " item second" > < divonclick = " clickAfter ( '黑桃' ) " style = " color :  #1A1A1A; " class = " icon" > </ div> </ div> < divclass = " item third" > < divonclick = " clickAfter ( '方块' ) " style = " color :  #FB1C17; " class = " icon" > </ div> </ div> < divclass = " item fouth" > < divonclick = " clickAfter ( '梅花' ) " style = " color :  #090B0A; " class = " icon" > </ div> </ div> < script> 
        function  clickAfter ( who )  { 
            console. log ( who) ; 
        } 
 </ script> </ body> </ html>