html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: 'Microsoft YaHei';
    color: #262626;
    letter-spacing: 1px;
}

.layout {
    display: flex;
    align-items: center;
    justify-content: start;
    box-sizing: border-box;
}

#content {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-evenly;
}
img {
    image-rendering: -moz-crisp-edges;
    /* Firefox */
    image-rendering: -o-crisp-edges;
    /* Opera */
    image-rendering: -webkit-optimize-contrast;
    /*Webkit (non-standard naming) */
    image-rendering: crisp-edges;
    -ms-interpolation-mode: nearest-neighbor;
    /* IE (non-standard property) */
}