html {
    font-size: 16px;
}
body {
    max-width: 640px;
    margin: 0 auto;
    height: 100%;
    min-width: 320px;
    background: #fff;
    font-size: 16px;
	line-height: 1.3125rem;
    color: #333333;
    font-family: 'Helvetica Neue',Helvetica,sans-serif;
    font-weight: bold;

}
html, body{
    max-width: 640px;
    margin: 0 auto;
    -webkit-text-size-adjust: none !important;
    -moz-text-size-adjust: none !important;
    -ms-text-size-adjust: none !important;
    text-size-adjust: none !important;
}
body, ul, ol, dl, dd, h1, h2, h3, h4, h5, h6, p, form, fieldset, legend, input, textarea, select, button, th, td {
    margin:0;
    padding:0;
}
h1, h2, h3, h4, h5, h6 {
    font-size:100%;
    font-weight:normal;
}
table {
    font-size:inherit;
}
button {
    overflow:visible;
}
th, em, strong, b, address, cite {
    font-style:normal;
    font-weight:normal;
}
li {
    list-style-image:none;
    list-style-position:outside;
    list-style-type:none;
}
img, fieldset {
    border:0 none;
    font-size: 0;
}
ins {
    text-decoration:none;
}
.float-clear::after{
    content: '';
    display: block;
    clear: both;
}
.float-left{
    float: left;
}
.float-right{
    float: right;
}
.bottom-btn{
    line-height: 3.375rem;
    background: #F60011;
    text-align: center;
    font-size: 1rem;
    bottom: 0;
    border-radius: 50px;
    width: calc(100% - 20px);
    margin: 10px;
    color: rgba(255, 255, 255, 0.85);
    box-shadow: 0 0 8px #FF000F9e;
}
.flex{
    display: flex;
}