header {
  position: relative;
  background-color: black;
  height: 75vh;
  min-height: 25rem;
  width: 100%;
  overflow: hidden;
}

header video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  z-index: 0;
  -ms-transform: translateX(-50%) translateY(-50%);
  -moz-transform: translateX(-50%) translateY(-50%);
  -webkit-transform: translateX(-50%) translateY(-50%);
  transform: translateX(-50%) translateY(-50%);
}

header .container {
  position: relative;
  z-index: 2;
}

header .overlay {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background-color: black;
  opacity: 0.2;
  z-index: 1;
}

header.over{
  background:url(assets/img/Galeria/logosSf.png) no-repeat center center fixed;
  background-size:cover;
  height:100px;
  width: 100%;
}
/* Media Query for devices withi coarse pointers and no hover functionality */

/* This will use a fallback image instead of a video for devices that commonly do not support the HTML5 video element */

            @media (pointer: coarse) and (hover: none) {
              header {
                background: url('https://source.unsplash.com/XT5OInaElMw/1600x900') black no-repeat center center scroll;
              }

              header video {
                display: none;
              }
            }

            .izquirda {
             text-align: left; 
            }

              .justificado{ text-align: justify; }


              .titulo {
              color: #283747;
              font-weight: normal;
              font-size: 35px;
              font-family: Arial;
            }
              .columnas {
              color: #283747;
              font-weight: normal;
              font-size: 30px;
              font-family: Arial;
            }
            .brillo {
              filter: brightness(1.50);
            }

             img.tam{
                width: 300px;
                height: 150px;
              }


                img.tam2{
                width: 400px;
                height: 230px;
              }

              #map { height: 180px; }