もうコンパクトにした方がいいかもしん

src/conponent/_contents.scss

@@ -4,7 +4,7 @@
   text-align: center;
   color: $white1;
   padding: 5px;
-  font-size: 20px;
+  font-size: 16px;
   border-bottom: solid 2px $suwa03;
   cursor: pointer;
   transition: background 0.3s, color 0.3s;

src/conponent/_navbar.scss

@@ -17,30 +17,12 @@
   align-items: center;
   justify-content: space-between;
 }
-.navbar-toggler {
-  border: 0px solid transparent;
-  padding: 0.25rem 0.75rem;
-  font-size: 1.25rem;
-  line-height: 1;
-  background-color: transparent;
-  border-radius: 0.25rem;
-}
 
-.navbar-toggler:hover, .navbar-toggler:focus { text-decoration: none; }
-.navbar-brand {
-  display: inline-block;
-  padding-top: 0.3125rem;
-  padding-bottom: 0.3125rem;
-  margin-right: 1rem;
-  font-size: 1.25rem;
-  line-height: inherit;
-  white-space: nowrap;
-  padding: 5px;
-}
 .navbar-brand, .nav-item {
   transition: background 0.3s;
   border-radius: 2px;
   cursor: pointer;
+  padding-left: 5px;
 }
 .navbar-brand:hover, .nav-item:hover {
   background-color: $suwa07;
@@ -48,7 +30,7 @@
 }
 
 .sidemenu { border: 2px solid $suwa03; box-shadow: 0 0 7px 3px $suwa04; }
-.nav-pills .nav-link { border-radius: 0px; }
+.nav-pills .nav-link { border-radius: 0px; font-size: 14px; }
 
 .dropdown { position: relative; }
 .mr-auto { margin-right: auto !important; }
@@ -76,6 +58,7 @@
   padding-left: 0;
   margin-bottom: 0;
   list-style: none;
+  font-size: 14px;
 }
 
 .navbar-nav .nav-link {
@@ -94,48 +77,24 @@
   align-items: center;
 }
 
-.navbar-toggler-icon {
-  display: inline-block;
-  width: 1.5em;
-  height: 1.5em;
-  vertical-align: middle;
-  content: "";
-  background: no-repeat center center;
-  background-size: 100% 100%;
+.navbar-expand {
+  flex-flow: row nowrap;
+  justify-content: flex-start;
 }
-
-@media (max-width: 767.98px) {
-  .navbar-expand > .container,
-  .navbar-expand > .container-fluid, .navbar-expand > .container-sm, .navbar-expand > .container-md, .navbar-expand > .container-lg, .navbar-expand > .container-xl {
-    padding-right: 0;
-    padding-left: 0;
-  }
+.navbar-expand .navbar-nav {
+  flex-direction: row;
 }
-
-@media (min-width: 768px) {
-  .navbar-expand {
-    flex-flow: row nowrap;
-    justify-content: flex-start;
-  }
-  .navbar-expand .navbar-nav {
-    flex-direction: row;
-  }
-  .navbar-expand .navbar-nav .dropdown-menu {
-    position: absolute;
-  }
-  .navbar-expand .navbar-nav .nav-link {
-    padding-right: 0.5rem;
-    padding-left: 0.5rem;
-  }
-  .navbar-expand > .container,
-  .navbar-expand > .container-fluid, .navbar-expand > .container-sm, .navbar-expand > .container-md, .navbar-expand > .container-lg, .navbar-expand > .container-xl {
-    flex-wrap: nowrap;
-  }
-  .navbar-expand .navbar-collapse {
-    display: flex !important;
-    flex-basis: auto;
-  }
-  .navbar-expand .navbar-toggler {
-    display: none;
-  }
+.navbar-expand .navbar-nav .dropdown-menu {
+  position: absolute;
+}
+.navbar-expand .navbar-nav .nav-link {
+  padding-right: 0.5rem;
+  padding-left: 0.5rem;
+}
+.navbar-expand > .container, .navbar-expand > .container-fluid {
+  flex-wrap: nowrap;
+}
+.navbar-expand .navbar-collapse {
+  display: flex !important;
+  flex-basis: auto;
 }