原生js和css写一个常用的loading

效果如下 :



代码如下 : 

    <div id="lading-body">
        <div class="spinner">
          <div class="rect1"></div>
          <div class="rect2"></div>
          <div class="rect3"></div>
          <div class="rect4"></div>
          <div class="rect5"></div>
        </div>
      </div>

#lading-body{
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}
.spinner {
    margin: 100px auto;
    width: 200px;
    height: 100px;
    text-align: center;
    font-size: 10px;
}

.spinner>div {
    background-color: var(--main-bg);
    height: 100%;
    width: 10px;
    display: inline-block;
    margin:0 5px;
    -webkit-animation: sk-stretchdelay 1.2s infinite ease-in-out;
    animation: sk-stretchdelay 1.2s infinite ease-in-out;
}

.spinner .rect2 {
    -webkit-animation-delay: -1.1s;
    animation-delay: -1.1s;
}

.spinner .rect3 {
    -webkit-animation-delay: -1.0s;
    animation-delay: -1.0s;
}

.spinner .rect4 {
    -webkit-animation-delay: -0.9s;
    animation-delay: -0.9s;
}

.spinner .rect5 {
    -webkit-animation-delay: -0.8s;
    animation-delay: -0.8s;
}

@-webkit-keyframes sk-stretchdelay {

    0%,
    40%,
    100% {
        -webkit-transform: scaleY(0.4)
    }

    20% {
        -webkit-transform: scaleY(1.0)
    }
}

@keyframes sk-stretchdelay {

    0%,
    40%,
    100% {
        transform: scaleY(0.4);
        -webkit-transform: scaleY(0.4);
    }

    20% {
        transform: scaleY(1.0);
        -webkit-transform: scaleY(1.0);
    }
}


/* 滚动条样式 */
::-webkit-scrollbar {
    width: 7px;
}

::-webkit-scrollbar-thumb {
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.2);
}

::-webkit-scrollbar-track {
    border-radius: 0;
    background: rgba(0, 0, 0, 0.1);
}