Стили css на разных экранах по разному смотрятся...?

.login-panel-open {
        background: url(../images/login-panel-open.png) left top no-repeat;
        height: 28px;
        width: 166px;
        position: absolute;
        left: 1150px;
        top: 50px;
        line-height: 28px;
        font-weight: bold;
        text-align: center;
        color: #252424;
        cursor: pointer;
    }

.form-text {
            color: #6a6a6a;
            font-size: 11px;
            border: 1px #c3c3c3 solid;
            margin: 0;
            padding: 7px 12px 7px 12px;
            background: #ececec;
            position: absolute;
            left: 1100px;
            top: 128px;
            width: 230px;
            border-radius:3px; 
            -webkit-border-radius:3px; 
            -moz-border-radius:3px;
        }