Arreglo de page not found

maquetacion_principal/css/pagenotfound.css

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+body {
+  margin: 0;
+  padding: 0;
+  font-family: 'Mulish', sans-serif;
+}
+
+.header {
+  background-color: #21C08B;
+  width: 100%;
+  height: 82px;
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+}
+.header__img {
+  margin-left: 30px;
+  width: 200px;
+}
+
+.not_found {
+  background: linear-gradient(#21C08B, #AB88FF );
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-direction: column;
+  padding: 0px 10px;
+  min-height: calc(100vh - 180px);
+}
+
+.box {
+  width: 600px;
+  height: 320px;
+}
+
+.text {
+  color: white;
+  display: flex;
+  text-align: center;
+  flex-direction: column;
+  font-size: 30px;
+}
+
+.animated {
+  animation-duration: 2.5s;
+  animation-fill-mode: both;
+  animation-iteration-count: infinite;
+}
+
+@keyframes pulse {
+  0% {transform: scale(1);}
+  50% {transform: scale(1.1);}
+  100% {transform: scale(1);}
+}
+.pulse {
+  animation-name: pulse;
+  animation-duration: 1s;
+}
+
+@keyframes rubberBand {
+  0% {transform: scale(1);}
+  30% {transform: scaleX(1.25) scaleY(0.75);}
+  40% {transform: scaleX(0.75) scaleY(1.25);}
+  60% {transform: scaleX(1.15) scaleY(0.85);}
+  100% {transform: scale(1);}
+}
+.rubberBand {
+  animation-name: rubberBand;
+} 
+
+.footer {
+  background-color: #AB88FF;
+  display: flex;
+  align-items: center;
+  height: 100px;
+  width: 100%;
+}
+
+.footer a {
+  color: white;
+  cursor: pointer;
+  font-size: 14px;
+  padding-left: 30px;
+  text-decoration: none;
+}
+
+.footer a:hover {
+  text-decoration: underline;
+}
+
+@media only screen and (max-width: 600px) {
+  .login__container {
+    background-color: transparent;
+    border: none;
+    padding: 0px;
+    width: 100%;
+    min-height: 500px;
+  }
+  .footer {
+    align-items: flex-start;
+    flex-direction: column;
+  }
+  .box {
+  width: 160px;
+  height: 120px;
+  }
+  .text {
+    font-size: 20px;
+  }
+}