recover position fixed width issue opera

recover position fixed issue opera

.menufixed{
position: fixed;
top: 0;

z-index: 999;
margin: 0 auto;
width: 100%;
background: #fff;
left: 50%;
transform: translateX(-50%);
-ms-transform: translateX(-50%);
-webkit-transform: translateX(-50%);
-moz-transform: translateX(-50%);
-o-transform: translateX(-50%);
transform: translateX(-50%);
-webkit-transform: translateX(-50%) !important;
-webkit-transform:translateX(-50%) !important;
-webkit-transform: translateZ(0);
 transition: width 0.2s;
 -webkit-appearance: none; /* Autoprefixer doesn't catch this */
 transition: height 0.4s ease;
  transition-delay:2s !important;
  -webkit-transition-delay:2s !important;
  

}