* {
    box-sizing: border-box;
}

.logo {
  cursor: pointer;
    min-width: 300px;
    width: 50%;
    height: auto;
    margin-right: auto;
    margin-left: auto;
    display: block;
}

.float_logo {
    float: right;
    width: 20%;
    min-width: 300px;
    height: auto;
}

.logo_center {
    min-width: 300px;
    width: 30%;
    height: auto;
    margin-right: auto;
    margin-left: auto;
    display: block;
}