Coraline Child Theme style.css

/*
Theme Name: Coraline Child Theme
Author: Self-Help WordPress User
Template: coraline
*/

@import url("../coraline/style.css");

/* Start child theme CSS here */

#header {
        position: fixed;
        top: 0;
        background: rgb(255, 255, 255); /* The Fallback */
        background: rgba(255, 255, 255, 1);
        z-index: 10;
        height: 300px;
        width: 770px;
}
#content-box {
        margin-top: 300px;
}