body {
  padding: 0;
  margin: 0;
}

* {
  font-family: Arial, Helvetica, sans-serif;
}

/* sections */
#banner {
  padding: 20px;
  background-color: lightgray;
}

#lewy,
#prawy {
  background-color: lightcoral;
  width: 50%;
  height: 300px;
  float: left;
}

#glowny {
  padding: 20px;
  background-color: lightgray;
  text-align: center;
}

#stopkal {
  padding: 20px;
  background-color: lightcoral;
}

#stopkap {
  /* padding: 20px;
  background-color: lightcoral; */
}

table,
td,
th {
  border: 1px solid black;
  padding: 10px;
  border-collapse: collapse;
  text-align: center;
}

/* classes */
.flex {
  display: flex;
}

.align-center {
  align-items: center;
}

.flex-col {
  flex-direction: column;
}

.mt-1 {
  margin-top: 10px;
}

.clear {
  clear: both;
}