html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    letter-spacing: 1px;
}

body {
    align-items: center;
    flex-direction: column;
    justify-content: space-evenly !important;
}

#top,
#center {
    width: 96%;
    margin: 0 2%;
    padding: 1%;
    overflow-y: auto;
    border: 1px solid #c2c2c2;
    box-sizing: border-box;
}

#top {
    height: 30%;
}

#center {
    height: 50%;
}

#bottom {
    width: 100%;
    height: 10%;
    justify-content: center;
}

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

.layui-btn-sm {
    font-size: 14px;
}

/*滚动条样式start*/
::-webkit-scrollbar {
    width: 5px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: #e7e7f1 !important;
    border-radius: 0px;
}

::-webkit-scrollbar-thumb {
    background: rgba(94, 96, 97, 0.43) !important;
    border-radius: 0px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(94, 96, 97, 0.43) !important;
    border-radius: 0px;
}

::-webkit-scrollbar-thumb:active {
    background: rgba(94, 96, 97, 0.43) !important;
    border-radius: 0px;
}

/*滚动条样式end*/