width and height of media player in css code example

Example: how to set video size html

#vidstrip {
    position:relative;
    padding-top: 0;
    margin-top: 250px;
    overflow: hidden;
}
.vidstrip-text {
    line-height: 2.1em;
    padding: 1em 4em;
    color: white;
}
.vidstrip-section {
    position:absolute;
    top:0;
    left:0;
    padding: 0;
    z-index:-1;
}
.vidstrip-section, #bgvid {
    width:100%;
    height:auto;
}