h1 {
    font-size: 22px;
    position: relative;
    padding-top: 1em;
    padding-bottom: 0.5em;
    border-bottom: 4px solid #ccc;
    margin-bottom:40px;
}

h3 {
    font-size: 18px;
    text-align: right;
}

h1::after {
    position: absolute;
    bottom: -4px;
    left: 0;
    z-index: 2;
    content: "";
    width: 20%;
    height: 4px;
    background-color: #007bab;
}
h2 {
    margin-top:50px;
    margin-bottom:40px;
}
section {
    width:900px;
    margin:0 auto;
}
p {
    padding-bottom:30px;
}
.about {
    text-align:center;
}
.flex {
    display:flex;
    padding-bottom:20px;
    flex-wrap: wrap;
}
.flex li{
    width:50%;
}
@media screen and (max-width: 1100px) {
    section {
        width:750px;
    }
}
@media screen and (max-width: 768px) {
    section {
        width:90%;
    }
    .flex {
        display:block;
    }
    .flex li{
        width:100%;
    }
}
.flex iframe{
    padding: 10px 25px;
    max-height:380px;
}
.flex p{
    text-align:center;
    padding:0 40px 70px 40px;
}
.CTR{
    font-size:120%;
    text-align:center;
    font-weight:bold;
}
footer {
    padding-top:0;
}
.copyright {
    padding:20px 0;
}