浮动 ( float css属性) float : left right Elements are floated horizontally, this means that an element can only be floated left or right, not up or down. http://www.w3schools.com/css/css_float.asp 浮动可以让元素在容器中尽量向左或者向右push移动, 这样其他元素会围绕浮动元素, 所谓的其他元素就是浮动元素后面…