styling update: fix console warnings

_assets/css/main.css

@@ -24,7 +24,6 @@
   position:fixed;
   background:#000;
   opacity:.8;
-  filter:alpha(opacity=80);
 }
 .mfp-wrap {
   top:0;
@@ -34,7 +33,7 @@
   z-index:1043;
   position:fixed;
   outline:none !important;
-  -webkit-backface-visibility:hidden
+  backface-visibility:hidden
 }
 .mfp-container {
   text-align:center;
@@ -153,7 +152,6 @@ button::-moz-focus-inner {
   text-decoration:none;
   text-align:center;
   opacity:1;
-  filter:alpha(opacity=100);
   padding:0 0 18px 10px;
   color:#fff;
   font-style:normal;
@@ -163,7 +161,6 @@ button::-moz-focus-inner {
 .mfp-close:hover,
 .mfp-close:focus {
   opacity:1;
-  filter:alpha(opacity=100);
 }
 .mfp-close:active {
   top:1px
@@ -190,7 +187,6 @@ button::-moz-focus-inner {
 .mfp-arrow {
   position:absolute;
   opacity:1;
-  filter:alpha(opacity=100);
   margin:0;
   top:50%;
   margin-top:-55px;
@@ -205,7 +201,6 @@ button::-moz-focus-inner {
 .mfp-arrow:hover,
 .mfp-arrow:focus {
   opacity:1;
-  filter:alpha(opacity=100);
 }
 .mfp-arrow:before,
 .mfp-arrow:after,
@@ -494,8 +489,6 @@ audio,
 canvas,
 video {
   display:inline-block;
-  *display:inline;
-  *zoom:1
 }
 audio:not([controls]) {
   display:none
@@ -542,7 +535,6 @@ textarea {
 }
 button,
 input {
-  *overflow:visible;
   line-height:normal
 }
 button::-moz-focus-inner,
@@ -554,7 +546,7 @@ button,
 html input[type="button"],
 input[type="reset"],
 input[type="submit"] {
-  -webkit-appearance:button;
+  appearance:button;
   cursor:pointer
 }
 label,
@@ -844,7 +836,6 @@ form legend {
   display:block;
   width:100%;
   margin-bottom:10px;
-  *margin-left:-7px;
   padding:0;
   color:#eaeaea;
   border:0;
@@ -867,7 +858,6 @@ button,
 select,
 textarea {
   vertical-align:baseline;
-  *vertical-align:middle
 }
 input,
 button,
@@ -916,7 +906,6 @@ input[type="radio"] {
   height:auto;
   padding:0;
   margin:3px 0;
-  *margin-top:0;
   line-height:normal;
   cursor:pointer;
   border-radius:0;
@@ -927,8 +916,6 @@ input[type="checkbox"],
 input[type="radio"] {
   box-sizing:border-box;
   padding:0;
-  *width:13px;
-  *height:13px
 }
 input[type="image"] {
   border:0
@@ -948,12 +935,8 @@ input[type="submit"] {
   width:auto;
   height:auto;
   cursor:pointer;
-  *overflow:visible
 }
 select,
-input[type="file"] {
-  *margin-top:4px
-}
 select {
   width:auto;
   background-color:#fff
@@ -1306,7 +1289,6 @@ th {
   pointer-events:none;
   cursor:not-allowed;
   opacity:0.65;
-  filter:alpha(opacity=65);
   box-shadow:none;
 }
 .btn--x-large {
@@ -3377,7 +3359,6 @@ body {
 .page__comments-form.disabled label {
   pointer-events:none;
   cursor:not-allowed;
-  filter:alpha(opacity=65);
   box-shadow:none;
   opacity:0.65
 }