body,
p,
ul,
ol,
dl,
dt,
h1,
h2,
h3,
h4,
h5,
h6,
dl,
dd,
dt {
    margin: 0;
    padding: 0;
}

ul,
ol {
    list-style: none;
}

input {
    border: none;
    outline: none;
}

a {
    text-decoration: none;
}

html {
    font-size: 100px;
}

.bb {
    width: 100%;
    background: #f5f5f5;
}

.dd {
    width: 100%;
    background: #fff;
}