.main_0 {
    padding-top: 20px;
    background: #ffffff;
    border-style: double;
    width: 50%;
    height: 100%;
    float: left;
}
.main_1 {
    padding-top: 20px;
    background: #ffffff;
    border-style: double;
    width: 50%;
    height: 100%;
    float: right;
}
.M1 {
    list-style-position :inside;
    background: #ffffff;
    border-style: double;
    width: 50%;
    height: auto;
    float: left;
}
.M2 {
    list-style-position: inside;
    background: #ffffff;
    border-style: double;
    width: 50%;
    height: auto;
    float: right;
}