body{
    font-family: arial;
    font-size: 15px;
    line-height: 1.6em;
}

li{
    list-style: none;
}

a{
    
    text-decoration: none;
    
}

label{
    display: inline-block;
    width: 180px;
}

input[type='text']{
    width:  97%;
    padding: 4px;
    border-radius: 5px;
    border: 1px #ccc solid;
}

input[type='number']{
    width: 50px;
    padding: 4px;
    border-radius: 5px;
    border: 1px #ccc solid;
}

.container{
    width: 60%;
    margin: 0 auto;
    overflow: auto;
}

header{
    border-bottom: 3px #f4f4f4 solid;
}

footer{
    border-top: 3px #f4f4f4 solid;
    text-align: center;
    padding-top: 5px;
}

main{
    padding-bottom: 20px;
}

a.start{
    display:inline-block;
    color: #666;
    background: #f4f4f4;
    border: 1px dotted #ccc;
    padding: 6px 13px;
}

.current{
    padding: 10px;
    background: #f4f4f4;
    border: #ccc dashed 1px;
    margin: 20px 0 10px 0;
}

@media only screen and (max-width:960px) {
    
    .container{
        width: 80%;
    }
}