* {
    padding: 0;
    margin: 0;
    border: 0;
}

html {
    -webkit-font-smoothing: antialiased;
}

body {
    font: 14px Arial, Helvetica, sans-serif;
    line-height: 18px;
    font-weight: bold;
}

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

a:hover {
    text-decoration: underline;
}

#container {
    padding: 200px 0 0 0;
    margin: 0 auto;
    width: 680px;
}

#container .top {
    line-height: 25px;
    font-size: 18px;
    color: #ffffff;
}

#container .main {
    line-height: 26px;
    font-size: 24px;
    margin-top: 50px;
}

.mobile {
    font: 14px Arial, Helvetica, sans-serif;
    line-height: 18px;
    font-weight: bold;
    display:none;
}

#container .mobile .top {
    line-height: 17px;
    font-size: 14px;
}

#container .mobile .main {
    line-height: 22px;
    font-size: 18px;
}

@media screen and (max-width:768px)
{
    #container {
        padding: 50px 0 50px 0;
        width: 320px;
    }
}

@media screen and (max-width:640px)
{
    #container {
        width: 340px;
    }
    
    .desk {
        display: none;
    }
    
    .mobile {
        display: block;
    }
}

@media screen and (max-width:480px)
{
    #container {
        width: 340px;
    }
}

@media screen and (max-width:320px)
{
    #container {
        width: 320px;
    }
}