.content-div {

padding-top: 25px;
    padding-left: 5%;
  width: 90%;
  height: 90%;
  overflow: hidden;
    color: white;
  

/*background-color: yellow*/

/*
       display: flex;
            justify-content: center;

       flex-direction:column
*/
        }

.content-iframe {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
 padding-top: 100%; 
/*background-color: yellow*/
}

iframe {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  width: 100%;
  height: 100%;
  border: none;
} 

        .content-header {
            font-size: 3em;
            font-weight: bold;
            margin-bottom: 10px;
        }

        .content-text {
            font-size: 1.5em;
            margin-bottom: 15px;
        }

        .content-footer {
            font-size: 0.9em;
            color: #777;
            text-align: right;
        }


.closebtn {
  position: absolute;
  top: 20px;
  right: 45px;
  font-size: 60px;
}

a {color: white
    
     }