/* Spinner */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
}

.loading > div {
  width: 18px;
  height: 18px;
  margin: 0 5px;
  border-radius: 100%;
  display: inline-block;
  animation: sk-scaleout 1.0s infinite ease-in-out;
}

.loading .sk-child:nth-child(1) {
  animation-delay: -0.4s;
}

.loading .sk-child:nth-child(2) {
  animation-delay: -0.3s;
}

.loading .sk-child:nth-child(3) {
  animation-delay: -0.2s;
}

.loading .sk-child:nth-child(4) {
  animation-delay: -0.1s;
}

@keyframes sk-scaleout {
  0% { transform: scale(0); }
  100% {
    transform: scale(1.0);
    opacity: 0;
  }
}

/* Other styling */
body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f2f2f2;
}

h1 {
  text-align: center;
  margin: 30px 0;
}

form {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 30px;
}

label {
  margin: 0 10px;
}

select {
  padding: 10px;
  margin: 0 10px;
  border: none;
  border-radius: 5px;
  outline: none;
}

button {
  padding: 10px 20px;
  margin: 0 10px;
  border: none;
  border-radius: 5px;
  background-color: #4CAF50;
  color: white;
  cursor: pointer;
}

#events {
  margin: 30px;
}

li {
  list-style-type: none;
  margin-bottom: 10px;
}