Refactoring of style files

Change-Id: I56d3641741f2289bb0f9dbaf641b85a401cf1042
diff --git a/dev/scss/main/logos.scss b/dev/scss/main/logos.scss
index 705ea43..3b87e96 100644
--- a/dev/scss/main/logos.scss
+++ b/dev/scss/main/logos.scss
@@ -1,59 +1,66 @@
 @charset "utf-8";
 @import "../util";
 
+/**
+ * Rules for logos.
+ */
 .logo {
   &::after {
     content: "" !important;
   }
+
   > * {
     background: {
-      repeat: no-repeat;
-      size: 90%;
+      repeat:   no-repeat;
+      size:     90%;
       position: 50% 50%;
     }
+
     > span {
-      margin-left: -30000px;
+      @include blind;
     }
   }
 }
 
+
 /**
  * Background image for the front page
  */
 #kalamar-bg {
   position: fixed;
-  height: 110%;
-  width: 175%;
-  top: 0;
-  z-index: -5000;
-  opacity: .1;
+  height:   110%;
+  width:    175%;
+  top:      0;
+  z-index:  -5000;
+  opacity:  .1;
   background: {
-    image:url('#{$img-path}/korap-bg-kalamar.svg');
-    size: 50%;
-    repeat: no-repeat;
+    image:    url('#{$img-path}/korap-bg-kalamar.svg');
+    size:     50%;
+    repeat:   no-repeat;
     position: 50% 50%;
   }
 }
 
+
 /**
  * Logo table of the front page
  */
 #logos {
-  position: relative;
-  text-align: right;
-  font-size: 85%;
-  right: 0;
-  width: 100%;
+  position:    relative;
+  text-align:  right;
+  font-size:   85%;
+  right:       0;
+  width:       100%;
   margin-left: ($standard-margin / 2);
-
   padding-left: 60%;
+
   > div {
-    border-top: 26px solid $dark-orange;
+    border-top:    26px solid $dark-orange;
     padding-right: 2em;
   }
   p {
     text-align: left;
-    display: inline-block;
+    display:    inline-block;
   }
 }
 
@@ -62,12 +69,10 @@
  * Logo: Institute for German Language
  */
 #ids-logo {
-  display: block;
-  width: (631 / 30) + em;
-  height: (200 / 30) + em;
-  background: {
-    image:url('#{$img-path}/ids-leibniz-institute-for-the-german-language.svg');
-  }
+  display:          block;
+  width:            (631 / 30) + em;
+  height:           (200 / 30) + em;
+  background-image: url('#{$img-path}/ids-leibniz-institute-for-the-german-language.svg');
 }
 
 
@@ -75,21 +80,21 @@
  * Logo: KorAP
  */
 h1 {
-  position: absolute;
-  margin: 0;
-  margin-left:15px;
-  left: 0;
-  top: 0;
-  width: 7.8em;
-  height: 2.4em;
-  z-index: 105;
+  position:    absolute;
+  margin:      0;
+  margin-left: 15px;
+  left:        0;
+  top:         0;
+  width:       7.8em;
+  height:      2.4em;
+  z-index:     105;
   background: {
-    size: 72%;
+    size:  72%;
     image: url('#{$img-path}/korap-logo-kalamar.svg');
   }
 }
 
 #overview {
   text-align: center;
-  width: 100%;
+  width:      100%;
 }