* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  font-family: "Rubik", sans-serif;
}
body {
  height: 100vh;
  background: linear-gradient(#18f08b 50%, #16191e 50%);
}
.container {
  width: 90vw;
  max-width: 37.5em;
  background-color: #242831;
  padding: 6em 3em;
  position: absolute;
  transform: translate(-50%, -50%);
  top: 50%;
  left: 50%;
}
.inp-wrapper {
  display: flex;
  justify-content: space-around;
  gap: 1.2em;
}
label {
  color: #d5d5d5;
  display: block;
  font-weight: 600;
}
input[type="date"] {
  font-size: 16px;
  padding: 1em;
  color: #242831;
  border: none;
  outline: none;
  border-radius: 0.2em;
  margin-top: 0.6em;
}
::-webkit-calendar-picker-indicator {
  background-color: #18f08b;
  padding: 0.2em;
  cursor: pointer;
  border-radius: 0.1em;
}
button {
  display: block;
  background-color: #18f08b;
  color: #16191e;
  font-size: 18px;
  margin: 1em auto 2em auto;
  border: none;
  padding: 0.7em 2em;
  border-radius: 0.3em;
  font-weight: 600;
}

#output {
  background-color: rgba(255, 255, 255, 0.15);
  text-align: center;
  padding: 1em;
  color: #ffffff;
  font-size: 1.2em;
  letter-spacing: 0.05em;
}
#output span {
  color: #18f08b;
  font-size: 1.4em;
  font-weight: 600;
}
@media screen and (max-width: 550px) {
  .container {
    padding: 4em 2em;
  }
  .inp-wrapper {
    flex-direction: column;
  }
  .date-wrapper {
    display: flex;
    align-items: center;
    flex-direction: column;
  }
}