* {
    box-sizing: border-box;
    user-select: none;
}
:root {
    --主题色: #f29799;
    --基础字体大小: 1vw;
}
@media (max-width: 1700px) {
    :root {
        --基础字体大小: 15px;
    }
}
@media (max-width: 1200px) {
    :root {
        --基础字体大小: 12px;
    }
}
@media (max-width:900px) {
    :root {
        --基础字体大小: 10px;
    }
}
@media (max-width: 600px) {
    :root {
        --基础字体大小: 7px;
    }
}
@media (max-width: 400px) {
    :root {
        --基础字体大小: 5px;
    }
}
@media (max-width: 300px) {
    :root {
        --基础字体大小: 3px;
    }
}


body {
    color: var(--主题色);
    margin: 0;
    padding: 0;
    height: 100vh;
}

section {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    align-content: center;
    height: 100%;
}

#首页 thank::after {
    content: "热爱你来过的每度温暖";
    font-size: calc(var(--基础字体大小) * 5);
    font-weight: bold;
}

#首页 welcome::after {
    content: "你好，欢迎来到我的网站";
    font-size: calc(var(--基础字体大小) * 2);
    font-weight: bold;
}

footer {
    padding: 20px;
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 30px;
    background-color: #ffffff;
    display: flex;
    color: var(--主题色);
    display: flex;
    align-items: center;
    font-size: 15px;
    flex-direction: row;
    justify-content: space-between;
    font-weight: bold;
}

a {
    text-decoration: none;
    color: var(--主题色);
}