html {
    margin: 0;
    border-width: 0;
    padding: 0;

    width: 100%;
    min-height: 100vh;

    font-family: 'Microsoft YaHei', sans-serif;
}

body {
    margin: 0;
    border-width: 0;
    padding: 0;

    width: 100%;
    height: 100%;
    min-height: 100vh;

    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
}

header {
    margin: 0;
    border-width: 0;
    padding: 0;

    width: 100%;
    height: 100%;
}

main {
    margin: 0;
    border-width: 0;
    padding: 0;

    width: 100%;
    height: 100vh;
    min-height: 100vh;
    flex-grow: 1;
}

footer {
    margin: 0;
    border-width: 0;
    padding: 0;

    width: 100%;
}

a {
    color: #000;
    text-decoration: none;

    transition-property: all;
    transition-delay: 0s;
    transition-duration: 0.1s;
    transition-timing-function: linear;
}

a:hover {
    cursor: pointer !important;
    color: #ff8400 !important;
}