html {
  font-size: calc(100% + 0.1vw);
  margin: 0px; padding: 0px;
 }
 
 
body 
{
    box-sizing: border-box;
    min-width: 460px;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0px;
    font-family: Lato, Arial, sans-serif;
    background-color: #d8eef9;
}

 a:hover {color:#ffff00;text-decoration:underline;}
 a {text-decoration:none; color:#f4f4f9;}

 .clearfix::after {display: table; content: ""; clear: both; }
 
 header {
    display: flex;
    width: 100%;
    justify-content: space-between;
    align-items: center;
    background-color: #2c3e50;
    color: white;
    padding: 10px 10px;
}

.menu > div {
  color: inherit;
  width: 100%;
  text-align: center;
}

.menu {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  background-color: #2c3e50;
  color: white;
  padding: 0px 10px;
}

.menu > div {
  color: inherit;
  width: auto;
  margin: 0px;
  padding: 10px 10px;
  text-align: center;
}

.menu > div:first-child {
 background-color: inherit;
 Text-align:Left;
}

.menu > div a {
 color: inherit;
 text-decoration:none;
}

.menu > div a:hover {
  color:#ffff00;
  text-decoration:underline;
}



.hero 
{
    width: 100%;
    text-align: center;
    background-color: #3498db;
    color: white;
    padding: 5px 10px;
}

section {
    padding: 10px 0px 10px 10px;
    margin: 0px;
}

footer 
{
    width: 100%;
    text-align: center;
    background-color: #2c3e50;
    color: white;
    padding: 10px 10px;
}

.button
{
    width: 100%;
    margin: 5px;
    display: inline-block;
    padding: 5px 5px;
    background-color: #b5b5b5;
    color: white;
    font-size: 18px;
    font-weight: bold;
    text-align: center;
    border-radius: 3px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
}

.button:hover {
    background-color: #0056b3;
    transform: scale(1.01);
}

.button:active {
    background-color: #004085;
    transform: scale(1.00);
}  
 

#videoPlayer 
{
    min-width:460px;
    width: 80%;
    padding: 20px;
    background-color: #000000;
}
#iframeVideo {
    width: 100%;
    height: 400px;
}
#videoList {
    width: 20%;
    height: 460px;
    overflow-y: auto;
    background-color: #a5a5a5;
    padding: 20px;
    color: #000000;
}
.videoItem {
    cursor: pointer;
    margin-bottom: 10px;
    text-align: center;
    width: 100%;
}
.videoItem img {
    width: 80%;
    border-radius: 8px;
}