body {
  font-family: Arial, sans-serif;
  background-color: #f8f8f8;
  margin: 30px;
  color: #333;
}

p {
  line-height: 1.5;
}

select {
  padding: 5px 8px;
  font-size: 0.95rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  width: 200px; /* increase width */
  max-width: 100%; /* responsive */
}

select option {
  padding: 4px 4px; /* makes options easier to read */
  font-size: 0.95rem;
}

fieldset {
  border: 1px solid #ccc;
  padding: 15px;
  margin-bottom: 20px;
  background-color: #fff;
  border-radius: 5px;
}

legend {
  font-weight: bold;
}

label {
  display: inline-block;
  margin-right: 10px;
  margin-bottom: 10px;
  font-size: 0.95rem;
}

button.btnRun {
  background-color: #448dbe;
  color: #fff;
  border: none;
  padding: 6px 12px;
  font-size: 0.95rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s;
  width: 100%;
}

button.btnRun:hover {
  background-color: #57aae1;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
  background-color: #fff;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

table,
th,
td {
  border: 1px solid #ddd;
  padding: 8px;
  text-align: left;
}

th {
  background-color: #448dbe;
  color: white;
  font-weight: normal;
}

td {
  background-color: #fdfdfd;
}

.resultTable {
  display: none;
  width: 100%;
  margin-left: 0;
  margin-right: auto;
}

.resultTable caption {
  text-align: left;
  padding: 15px 3px;
  font-size: 1.5rem;
}

@media screen and (max-width: 600px) {
  select {
    width: 100%;
  }
}

#preloader {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  overflow: hidden;
  background: #fff;
}
#preloader:before {
  content: "";
  position: fixed;
  top: calc(50% - 30px);
  left: calc(50% - 30px);
  border: 6px solid #f2f2f2;
  border-top: 6px solid #56829e;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  -webkit-animation: animate-preloader 1s linear infinite;
  animation: animate-preloader 1s linear infinite;
}
@-webkit-keyframes animate-preloader {
  0% {
    -webkit-transform: rotate(0deg);
    transform: rotate(0deg);
  }
  100% {
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}
@keyframes animate-preloader {
  0% {
    -webkit-transform: rotate(0deg);
    transform: rotate(0deg);
  }
  100% {
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}