* {
    box-sizing: border-box;
}
.row::after {
    content: "";
    clear: both;
    display: table;
}
[class*="col-"] {
    float: left;
    padding: 15px;
}
html {
    font-family: "impact", sans-serif;
}
.header {
    background-color: #9933cc;
    color: #ffffff;
    padding: 15px;
}

.footer {
    background-color: #0099cc;
	width: 100%;
    color: #ffffff;
    text-align: left;
    font-size: 12px;
    padding: 15px;
	font-family: monospace;
}
/* For mobile phones: */
[class*="col-"] {
    width: 100%;
}


@media only screen and (min-width: 768px) {
    /* For desktop: */
    .col-1 {width: 8.33%;}
    .col-2 {width: 20%;}
    .col-3 {width: 25%;}
    .col-4 {width: 33.33%;}
    .col-5 {width: 41.66%;}
    .col-6 {width: 50%;}
    .col-7 {width: 58.33%;}
    .col-8 {width: 66.66%;}
    .col-9 {width: 75%;}
    .col-10 {width: 83.33%;}
    .col-11 {width: 91.66%;}
    .col-12 {width: 100%;}
}

.thumbnail {
            width: 100%;
            height: auto;
            cursor: pointer;
            object-fit: cover;
            border-radius: 10px;
            transition: transform 0.3s;
        }
.thumbnail:hover {
            transform: scale(1.1);
        }
		
.video-title {
            font-weight: bold;
            margin-top: 5px;
			font-size: 2em;
			color: steelblue;
        }

/* The hero image */
.hero-image {
  width: 100%;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
}

/* Place text in the middle of the image */
.hero-text h1{
  text-align: center;
  position: absolute;
  top: 15%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 4em;
  font-weight: bold;
  font-family: impact;
}
.hero-text p{
  text-align: center;
  position: absolute;
  top: 25%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 2em;
  font-weight: bold;
  font-family: monospace;
}