Flex mobile phone tablet compatibility problem solving

/* ====== ================================================== ====

 flex: Define the layout as a box model

 flex-v: box model vertical layout

 flex-1: Child elements occupy the remaining space

 flex-align-center: the child element is vertically centered

 flex-pack-center: the child element is centered horizontally

 flex-pack-justify: align child elements at both ends

 Compatibility: ios 4+, android 2.3+, winphone8+

 ============================================= ============== */

.flex{display:-webkit-box; display:-webkit-flex;display:-ms-flexbox;display:flex;}

.flex-v{-webkit-box-orient:vertical< /span>;-webkit-flex-direction:column;-ms-flex-direction:column;flex- direction:column;}

.flex-1{-webkit-box-flex:1< /span>;-webkit-flex:1;-ms-flex:1;flex: 1;}

.flex-align-center{-webkit-box-align: center;-webkit-align-items:center;-ms-flex-align:center; align-items:center;}

.flex-pack-center{-webkit-box-pack: center;-webkit-justify-content:center;-ms-flex-pack:center; justify-content:center;}

.flex-pack-justify{-webkit-box-pack: justify;-webkit-justify-content:space-between;< span style="color: #ff0000;">-ms-flex-pack:justify;justify-content:space-between;}

< span style="color: #008000;">/* ===================== ======================================

 flex: Define the layout as a box model

 flex-v: box model vertical layout

 flex-1: Child elements occupy the remaining space

 flex-align-center: the child element is vertically centered

 flex-pack-center: the child element is centered horizontally

 flex-pack-justify: align child elements at both ends

 Compatibility: ios 4+, android 2.3+, winphone8+

 ============================================= ============== */

.flex{display:-webkit-box; display:-webkit-flex;display:-ms-flexbox;display:flex;}

.flex-v{-webkit-box-orient:vertical< /span>;-webkit-flex-direction:column;-ms-flex-direction:column;flex- direction:column;}

.flex-1{-webkit-box-flex:1< /span>;-webkit-flex:1;-ms-flex:1;flex: 1;}

.flex-align-center{-webkit-box-align: center;-webkit-align-items:center;-ms-flex-align:center; align-items:center;}

.flex-pack-center{-webkit-box-pack: center;-webkit-justify-content:center;-ms-flex-pack:center; justify-content:center;}

.flex-pack-justify{-webkit-box-pack: justify;-webkit-justify-content:space-between;< span style="color: #ff0000;">-ms-flex-pack:justify;justify-content:space-between;}