Updated first part

Refactored _index into multiple files

Author: vfdev-5

assets/pytorch-ignite-theme.scss

@@ -49,126 +49,10 @@ li {
   margin-bottom: 0;
 }
 
-.this-talk-link {
-    font-size: 0.8em;
-    display: block;
-    font-style: italic;
-    margin-top: 0.5em;
-}
-
 .hljs-ln-numbers {
     display: none;
 }
 
-.g {
-  box-sizing: border-box;
-  display: -ms-flexbox;
-  display: -webkit-box;
-  display: flex;
-  -ms-flex: 0 1 auto;
-  -webkit-box-flex: 0;
-  flex: 0 1 auto;
-  -ms-flex-direction: row;
-  -webkit-box-orient: horizontal;
-  -webkit-box-direction: normal;
-  flex-direction: row;
-  -ms-flex-wrap: wrap;
-  flex-wrap: wrap;
-  margin: 0.5rem -0.5rem;
-}
-
-.g-column {
-    -webkit-box-orient: vertical;
-    -webkit-box-direction: normal;
-        -ms-flex-direction: column;
-            flex-direction: column;
-}
-
-.g-1
-.g-2,
-.g-3,
-.g-4 {
-  box-sizing: border-box;
-  -ms-flex: 0 0 auto;
-  -webkit-box-flex: 0;
-  flex: 0 0 auto;
-}
-
-.g-1 {
-  -ms-flex: 1 0 auto;
-  -webkit-box-flex: 1;
-  flex: 1;
-}
-
-.g-2 {
-  -ms-flex: 2 0 auto;
-  -webkit-box-flex: 2;
-  flex: 2;
-}
-
-.g-3 {
-  -ms-flex: 3 0 auto;
-  -webkit-box-flex: 3;
-  flex: 3;
-}
-
-.g-4 {
-  -ms-flex: 4 0 auto;
-  -webkit-box-flex: 4;
-  flex: 4;
-}
-
-.g-start {
-   -ms-flex-pack: start;
-   -webkit-box-pack: start;
-   justify-content: flex-start;
-   text-align: start;
- }
-
- .g-center {
-   -ms-flex-pack: center;
-   -webkit-box-pack: center;
-   justify-content: center;
-   text-align: center;
- }
-
- .g-end {
-   -ms-flex-pack: end;
-   -webkit-box-pack: end;
-   justify-content: flex-end;
-   text-align: end;
- }
-
- .g-top {
-   -ms-flex-align: start;
-   -webkit-box-align: start;
-   align-items: flex-start;
- }
-
- .g-middle {
-   -ms-flex-align: center;
-   -webkit-box-align: center;
-   align-items: center;
- }
-
- .g-bottom {
-   -ms-flex-align: end;
-   -webkit-box-align: end;
-   align-items: flex-end;
- }
-
- .g-around {
-   -ms-flex-pack: distribute;
-   justify-content: space-around;
- }
-
- .g-between {
-   -ms-flex-pack: justify;
-   -webkit-box-pack: justify;
-   justify-content: space-between;
- }
-
-
 .icon {
     background-size: cover;
     display: inline-block;