.containerM
{
width:95%;
margin:auto;

}

.menuDiv
{
width:100%;
padding-right:10px;
margin-top:10px;
}

.contentDiv
{
width:99.8%;
border-radius: 0 0 20px 20px;
margin:auto;
}

input[type=text] {
    width: 250px;
    padding: 12px 20px;
    margin: 8px 0;
    display: inline-block;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}
input[type=password] {
    width: 250px;
    padding: 12px 20px;
    margin: 8px 0;
    display: inline-block;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}
select {
    width: 250px;
    padding: 12px 20px;
    margin: 8px 0;
    display: inline-block;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}
input[type=submit] {
    background-color: #0060af;
    color: white;
    padding: 5px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}