自己做的超高仿Win10加载动画（应该是全网最像的 HTML 实现了），自己想用就拿去用吧

转圈加载

在线演示

HTML:

<div class="loading">
    <i>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
    </i>
</div>

CSS:

html,
body,
div{
    margin: 0;
    padding: 0;
}
html,
body {
    width: 100%;
    height: 100%;
}
.loading {
    width: 100%;
    height: 100%;
    background: #1E1E1E;
    position: relative;
}
    .loading i {
        margin: auto;
        position: absolute;
        top: calc(50% - 40px);
        left: calc(50% - 40px);
        width: 80px;
        height: 80px;
        display: block;
    }
    .loading span {
        position: absolute;
        width: 100%;
        height: 100%;
        opacity: 0;
        animation: i 5.5s infinite;
    }
        .loading span:after {
            content: '';
            display: block;
            position: absolute;
            left: 0px;
            top: 0px;
            width: 10px;
            height: 10px;
            background: #0078D7;
            border-radius: 10px;
        }
        .loading span:nth-child(1) {
            animation-delay: 0.18s;
        }
        .loading span:nth-child(2) {
            animation-delay: 0.36s;
        }
        .loading span:nth-child(3) {
            animation-delay: 0.54s;
        }
        .loading span:nth-child(4) {
            animation-delay: 0.72s;
        }
        .loading span:nth-child(5) {
            animation-delay: .90s;
        }
        .loading span:nth-child(6) {
            animation-delay: 1.08s;
        }
@keyframes i {
    0% {
        opacity: 1;
        transform: rotate(180deg);
        animation-timing-function: cubic-bezier(.29,.44,.32,.74);
    }
    7% {
        opacity: 1;
        transform: rotate(300deg);
        animation-timing-function: linear;
    }
    30% {
        opacity: 1;
        transform: rotate(450deg);
        animation-timing-function: cubic-bezier(.53,.27,.37,.81);
    }
    39% {
        opacity: 1;
        transform: rotate(645deg);
        animation-timing-function: linear;
    }
    63% {
        opacity: 1;
        transform: rotate(800deg);
        animation-timing-function: cubic-bezier(.5,.32,.82,.54);
    }
    68% {
        opacity: 1;
        transform: rotate(920deg);
        animation-timing-function: ease-in;
    }
    69% {
        opacity: 0;
        transform: rotate(920deg);
    }
    100% {
        opacity: 0;
        transform: rotate(900deg);
    }
}

条形加载

在线演示

HTML:

<div id="preload">
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
</div>

CSS:

@keyframes loader {
    1% {
        left: -10%;
        opacity: 1;
    }
    60% {
        left: 110%;
        opacity: 1;
    }
    61% {
        opacity: 0;
    }
}
#preload {
    z-index: 1000;
    position: fixed;
    width: 100%;
    height: 100%;
    background: #1E1E1E;
    top: 0;
    left: 0;
    transition: opacity .3s;
}
    #preload span {
        display: block;
        bottom: 45%;
        height: 10px;
        width: 10px;
        position: fixed;
        background: #0078D7;
        z-index: 1001;
        display: inline-block;
        margin: 0 2px;
        border-radius: 100%;
        animation: loader 5s infinite cubic-bezier(0.030, 0.615, 0.995, 0.415);
        transform: translate(-50%,-50%);
        opacity: 0;
    }
        #preload span:nth-child(1) {
            animation-delay: 0.5s;
        }
        #preload span:nth-child(2) {
            animation-delay: 0.4s;
        }
        #preload span:nth-child(3) {
            animation-delay: 0.3s;
        }
        #preload span:nth-child(4) {
            animation-delay: 0.2s;
        }
        #preload span:nth-child(5) {
            animation-delay: 0.1s;
        }
        #preload span:nth-child(6) {
            animation-delay: 0;
        }