.panel {
    padding: 20px;
    background-color: #fff;
    box-shadow: 0px 0px 15px 0px #00000024;
    border-radius: 20px;
}

.panel--page {
    min-height: 300px;
}

.panel::after {
    content: '';
    display: block; 
    clear: both;
}

.panel--contact-1 { 
    margin-bottom: 35px;
}

.panel__heading {
    font-size: 19px;
    margin-bottom: 5px;
    border-bottom: 2px solid #ccc;
    padding-bottom: 5px;
}

@media (min-width: 600px) {
    .panel--page {
        padding: 30px 40px 30px;
    }
    
    .panel--contact {
        padding: 40px 40px 20px;
    }

    .panel__heading {
        font-size: 23px;
    }
}

@media (min-width: 1024px) {
    .panel--contact-1 { 
        margin-bottom: 50px;
    }

    .panel--content {
        padding: 30px;
    }

    .panel__heading {
        font-size: 28px;
        margin-bottom: 15px;
    }
}

@media (min-width: 1200px) {
    .panel--content {    
        padding: 35px;
    }

    .panel__heading {
        font-size: 33px;
    }
}

@media (min-width: 1600px) {
    .panel--about {
        padding-left: 50px;
        padding-right: 50px;
    }

    .panel--contact {
        padding: 50px 50px 20px;
    }

    .panel--content {    
        padding: 40px;
    }

    .panel__heading {
        font-size: 40px;
    }
}