判斷題
多項(xiàng)選擇題
A.font-weight:normal B.font-weight:400; C.font-style:normal; D.font-style:400;
A..content{position:relative} B..message{position:absolute;left:0;top:0} C..message{position:relative} D..content{position:absolute;left:0;top:0}
A.hidden B.scroll C.visible D.auto
A.border:2pxsolid#00f; B.width:20px;height:20px;overflow:hidden; C.background:#f00; D.border-radius:50%;
A.width B.font-size C.height D.padding
A.background-position:center50%; B.background-position:50%50%; C.background-position:50%center; D.background-position:centercenter;
A.margin B.color C.overflow D.float
A.repeat-x B.no-repeat C.repeat-y D.Repeat-xy
A.a:hover B.a:active C.a:visited D.a:link