iframe {
    border: none;
    outline: none;
    overflow: hidden; 
    width:100%; 
    min-height:550px;
}

.tabs {
    max-width: 90%;
    float: none;
    list-style: none;
    padding: 0;
    margin: 75px auto;
}

.tabs:after {
    content: '';
    display: table;
    clear: both;
}

.tabs input[type=radio] {
    display:none;
}

.tabs label {
    display: block;
    float: left;
    width: 50%;
    color: #737373;
    font-size: 18px;
    font-weight: normal;
    text-decoration: none;
    text-align: center;
    line-height: 2;
    cursor: pointer;
    box-shadow: inset 0 1px #ccc;
    border-bottom: 1px solid #ccc;
    -webkit-transition: all 0.5s; 
    transition: all 0.5s;
    height: 50px;
}

.tabs label span {
    /*! display: none; */
}

.tabs label i {
    padding: 5px;
    margin-right: 0;
}

.tabs label:hover {
    color: #c42f3d;
    box-shadow: inset 0 1px #c42f3d;
    border-bottom: 1px solid #c42f3d;
}

.tab-content {
    display: none;
    width: 100%;
    float: left;
    padding: 15px;
    box-sizing: border-box;
    /*! background-color:#ffffff; */
}

.tab-content * {
    -webkit-animation: scale 0.7s ease-in-out;
    -moz-animation: scale 0.7s ease-in-out;
    animation: scale 0.7s ease-in-out;
}

@keyframes scale {
    0% {
        transform: scale(0.9);
        opacity: 0;
    }
    50% {
        transform: scale(1.01);
        opacity: 0.5;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.tabs [id^="tab"]:checked + label {
    /*! background: #FFF; */
    box-shadow: inset 0 1px #c42f3d;
    border-bottom: 1px solid #c42f3d;
    color: #c42f3d;
}

#tab1:checked ~ #tab-content1,
#tab2:checked ~ #tab-content2,
#tab3:checked ~ #tab-content3 {
    display: block;
}

@media (min-width: 768px) {
    .tabs i {
        padding: 5px;
        margin-right: 10px;
    }
    .tabs label span {
        display: inline-block;
    }
    .tabs {
        max-width: 950px;
        margin: 50px auto;
    }
}