html, body {
  margin: 0;
  padding: 0;
}

body {
  padding-top: 65px;
}

header {
  background: rgba(255,255,255,0.75);
  padding: 15px;
}

header {
  position: fixed;
  top: 0; left: 0; right: 0;
}

#bottom {
  position: fixed;
  right: 15px;
  bottom: 15px;
}

input {
  border: 0;
  background-color: #efefef;
  padding: 15px;
  border-radius: 50px;
}

button {
  background-color: #4a4f9d;
  border: 0;
  padding: 15px;
  color: white;
  border-radius: 50px;
}

input, button {
  outline: none;
  opacity: 1;
}

input:focus, button:focus, button:hover {
  opacity: 0.8;
}

button:hover {
  cursor: pointer;
}

#top-buttons, form {
  display: inline-block;
  margin: 0;
}

#top-buttons {
  float: right;
}

.post {
  margin: 15px;
  padding: 15px;
  background-color: #9de1fe;
  border-radius: 5px;
}

.post b {
  margin-right: 5;
}

.post img {
  display: block;
  margin: 10px 0;
}