.mmain {
    background-repeat: no-repeat;
    background-position: center center;
    margin: 0;
    background-color: yellow;
}

.mcontainer {
    display: block;
    height: 100%;
    margin: 0 auto;
    max-width: 1920px;
    position: relative;
}

.marquee {
    display: block;
    position: relative;
    width: 100%;
    margin: auto;
}

marquee {
    width: 100%;
    margin: auto;
    display: block;
}

h3{
  color: red;
  font: 18px "Arial Black", Sans serif;
  font-weight: bold;
  margin: 6px 0;
}