.mybutton {
    width: 200px;
    margin-bottom: 10px;
}
h3 {
    font-family: Arial;
    font-size: 20px;
    margin: 0px;
    margin-bottom: 5px;
}
.col-md-4 {
    margin-bottom: 30px;
}
.myblock {
    padding-left: 30px;
    padding-right: 30px;
    padding-top: 20px;
    padding-bottom: 15px;
    border-radius: 6px;
    color: inherit;
    background-color: #eee;
    min-width: 340px;
}