main.css

body,
html {
    padding: 0;
    margin: 0;
    font-family: 'Quicksand', sans-serif;
    font-weight: 400;
    overflow: hidden;
}

.writing {
    width: 320px;
    height: 200px;
    background-color: #3f3f3f;
    border: 1px solid #bbbbbb;
    border-radius: 6px 6px 4px 4px;
    position: relative;
}

.writing .topbar{
    position: absolute;
    width: 100%;
    height: 12px;
    background-color: #f1f1f1;
    border-top-left-radius: 4px;
    border-top-right-radius: 4px;
}

.writing .topbar div{
    height: 6px;
    width: 6px;
    border-radius: 50%;
    margin: 3px;
    float: left;
}

.writing .topbar div.green{
    background-color: #60d060;
}
.writing .topbar div.red{
    background-color: red;
}
.writing .topbar div.yellow{
    background-color: #e6c015;
}

.writing .code {
    padding: 15px;
}

.writing .code ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.writing .code ul li {
    background-color: #9e9e9e;
    width: 0;
    height: 7px;
    border-radius: 6px;
    margin: 10px 0;
}

.container {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
    height: 100vh;
    width: 100%;
    -webkit-transition: -webkit-transform .5s;
    transition: -webkit-transform .5s;
    transition: transform .5s;
    transition: transform .5s, -webkit-transform .5s;
}

.stack-container {
    position: relative;
    width: 420px;
    height: 210px;
    -webkit-transition: width 1s, height 1s;
    transition: width 1s, height 1s;
}

.pokeup {
    -webkit-transition: all .3s ease;
    transition: all .3s ease;
}

.pokeup:hover {
    -webkit-transform: translateY(-10px);
            transform: translateY(-10px);
    -webkit-transition: .3s ease;
    transition: .3s ease;
}


.error {
    background-color: #f5f5f500;font-family: 'Montserrat', sans-serif;
    display: flex;
    justify-content: center; /* 将内容水平居中 */
    align-items: center; /* 将内容垂直居中 */
    height: 100vh; /* 设置容器高度为视口高度，以实现垂直居中 */
}
.d-flex {
    display:flex;
}
.align-center {
    align-items: center;			
}
.container {
    align-items: center;
    max-width: 90%;
}
.col-L {
    padding:2em;
}
.col-R {
    max-width: 50%;
    width:50%
}	
.color-white{fill:#FFFFFF;}	
.logo {
    height: 40px;
    width: 40px;
    font-size: .5em;
    background-color: #ffcb1f;
    border-radius: 50%;
    padding: 1em;
    margin: 1em;		    
}						
h1 {
    margin: 0;
    font-size: 5vmax;
    font-size: 36px;
    font-size: 7vmin;
    color:rgb(0, 0, 0);
    width: 130%;
}	
.st0{fill:#FFCB1E;}
.st1{fill:#FFB8B8;}
.st2,.st4,.st7 {
    stroke:#3F0E8C;
    stroke-miterlimit:10;
}
.st2{fill:none;}
.st3{fill:#FFFFFF;stroke:#1D1D1B;stroke-width:0.9847;stroke-miterlimit:10;}
.st4{
    fill:#00D292;
}
.st5{fill:#00D292;}
.st6{fill:#00CCCB;}
.st7{fill:#00CCCB;}
.st8{fill:none;stroke:#1D1D1B;stroke-width:0.9847;stroke-miterlimit:10;}	
.st4,.st5,.st6{
    -webkit-animation: downMotion 8s ease-in-out infinite;
    -moz-animation: downMotion 8s ease-in-out infinite;
    animation: downMotion 8s ease-in-out infinite;
}	
.st0{
    -webkit-animation: upMotion 10s ease-in-out infinite;
    -moz-animation: upMotion 10s ease-in-out infinite;
    animation: upMotion 10s ease-in-out infinite;
}
.st7,.run{
    -webkit-animation: upMotion 6s ease-in-out infinite;
    -moz-animation: upMotion 6s ease-in-out infinite;
    animation: upMotion 6s ease-in-out infinite;
}
.rotate {
    transform-origin: 116px 88px;
    -webkit-animation: 4s rotate infinite linear;
    animation: 4s rotate infinite linear;
}   		
 @keyframes downMotion {
     0% {transform: translate(0, -15px);}
     50% {transform: translate(0, 0); }
     100% {transform: translate(0, -15px);}
  }
 @-webkit-keyframes downMotion {
     0% {transform: translate(0, -15px);}
     50% {transform: translate(0, 0); }
     100% {transform: translate(0, -15px);}
  }
 @-moz-keyframes downMotion {
     0% {transform: translate(0, -15px);}
     50% {transform: translate(0, 0); }
     100% {transform: translate(0, -15px);}
  } 		  		 
 @keyframes upMotion {
     0% {transform: translate(0, 15px);}
     50% {transform: translate(0, 0); }
     100% {transform: translate(0, 15px);}
  } 
 @-webkit-keyframes upMotion {
     0% {transform: translate(0, 15px);}
     50% {transform: translate(0, 0); }
     100% {transform: translate(0, 15px);}
  }  
 @-moz-keyframes upMotion {
     0% {transform: translate(0, 15px);}
     50% {transform: translate(0, 0); }
     100% {transform: translate(0, 15px);}
  }   		 		 
@keyframes rotate {100% {transform: rotate(360deg); } }
@-webkit-keyframes rotate {100% {-webkit-transform: rotate(360deg); } }
@-moz-keyframes rotate {100% {-webkit-transform: rotate(360deg); } } 
@-o-keyframes rotate {100% {-webkit-transform: rotate(360deg); } }		 		 	
@media only screen and (min-width: 992px) {
    .container {
        justify-content: center;
        height: calc(100vh - 16px);
        display: flex;
        flex-wrap: wrap;
    }			
    .col-L {
        width:40%;
        margin-right:10%;
    }
}
@media only screen and (max-width: 991px) {
    .flex-column {
        flex-direction: column;
    }
}

.perspec {
    -webkit-perspective: 1000px;
            perspective: 1000px;
}

.writeLine{
    -webkit-animation: writeLine .4s linear forwards;
            animation: writeLine .4s linear forwards;
}

.explode{
    -webkit-animation: explode .5s ease-in-out forwards;
            animation: explode .5s ease-in-out forwards;
}

.card {
    -webkit-animation: tiltcard .5s ease-in-out 1s forwards;
            animation: tiltcard .5s ease-in-out 1s forwards;
    position: absolute;
}

@-webkit-keyframes tiltcard {
    0% {
        -webkit-transform: rotateY(0deg);
                transform: rotateY(0deg);
    }

    100% {
        -webkit-transform: rotateY(-30deg);
                transform: rotateY(-30deg);
    }
}

@keyframes tiltcard {
    0% {
        -webkit-transform: rotateY(0deg);
                transform: rotateY(0deg);
    }

    100% {
        -webkit-transform: rotateY(-30deg);
                transform: rotateY(-30deg);
    }
}

@-webkit-keyframes explode {
    0% {
        -webkit-transform: translate(0, 0) scale(1);
                transform: translate(0, 0) scale(1);
    }

    100% {
        -webkit-transform: translate(var(--spreaddist), var(--vertdist)) scale(var(--scaledist));
                transform: translate(var(--spreaddist), var(--vertdist)) scale(var(--scaledist));
    }
}

@keyframes explode {
    0% {
        -webkit-transform: translate(0, 0) scale(1);
                transform: translate(0, 0) scale(1);
    }

    100% {
        -webkit-transform: translate(var(--spreaddist), var(--vertdist)) scale(var(--scaledist));
                transform: translate(var(--spreaddist), var(--vertdist)) scale(var(--scaledist));
    }
}

@-webkit-keyframes writeLine {
    0% {
        width:0;
    }

    100% {
        width: var(--linelength);
    }
}

@keyframes writeLine {
    0% {
        width:0;
    }

    100% {
        width: var(--linelength);
    }
}

@media screen and (max-width: 1000px) {
    .container {
      -webkit-transform: scale(.85);
              transform: scale(.85);
    }
  }

  @media screen and (max-width: 850px) {
    .container {
      -webkit-transform: scale(.75);
              transform: scale(.75);
    }
  }

  @media screen and (max-width: 775px) {
    .container {
      -ms-flex-wrap: wrap-reverse;
          flex-wrap: wrap-reverse;
      -webkit-box-align: inherit;
          -ms-flex-align: inherit;
              align-items: inherit;
    }
  }

  @media screen and (max-width: 370px) {
    .container {
        -webkit-transform: scale(.6);
                transform: scale(.6);
      }
  }