body {
  background-color: #0099E5;
  font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 20px;
}

#enter-numbers { 
  width: 260px;
}

#your-array {
  height: 50px;
  flex-wrap: wrap;
}
#your-array-box {
  display: none;
}

#function-output {
  display: flex;
  width: 100%;
}

.container-child {
  width: 50%;
  border-style: 5px solid #242424;
}

#container-head, #container {
  display: flex;
}

#container-head > * {
  width: 50%;
  height: 20px;
  padding: 5px;
  border-bottom: 1px solid #242424;
}

.functions {
  width: 50%;
}
.functions > * {
  margin: 10px 0;
}

#input {
  width: 30px;
  text-align: center;
}

.btn-go {
  height: 20px;

}

#output {
  width: 50%;
  padding: 5px 5px;
}

footer {
  width: 100%;
  text-align: center;
  margin: 0 0 -10px -10px;
  position: fixed;
  background-color: white;
  bottom: 10px;
}