fix: fixed issues

assets/scss/_l-go-top.scss

@@ -0,0 +1,33 @@
+.go-top {
+  &__button {
+    position: fixed;
+    left: auto;
+    right: 15px;
+    bottom: 40px;
+    z-index: 0;
+    display: block;
+    height: 60px;
+    width: 60px;
+    border-radius: 60px;
+    background: url(../img/icons/prev.svg) center no-repeat;
+    background-color: $blue;
+    box-shadow: 0 0 10px rgba($color: $black, $alpha: 0.2);
+    transform: rotate(90deg);
+    opacity: 0;
+    transition: opacity ease-in-out 0.15s, background-color ease-in-out 0.1s;
+    cursor: pointer;
+
+    @include laptop {
+      display: none;
+    }
+
+    &:active {
+      background-color: $darkblue;
+    }
+
+    &.active {
+      z-index: 100;
+      opacity: 1;
+    }
+  }
+}

assets/scss/_l-step-by-step.scss

@@ -156,6 +156,10 @@
       line-height: 141%;
       text-align: center;
       color: $darkgrey;
+
+      & a {
+        color: $darkgrey;
+      }
     }
 
     &-text {

assets/scss/index.scss

@@ -33,3 +33,4 @@
 @import './l-faq';
 @import './l-callback';
 @import './l-modal';
+@import './l-go-top';