body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

h1 {
  color: #333;
}

form {
  margin-bottom: 20px;
}

label,
input,
button {
  display: block;
  margin: 10px 0;
}

table {
  border-collapse: collapse;
  width: 100%;
  margin: 20px 0;
  background-color: #fff;
}

.table-container {
  width: 80%;
  overflow-x: auto;
}

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

th {
  background-color: #f2f2f2;
  text-align: left;
}
td[contenteditable="true"] {
  background-color: #f9f9f9;
}

.center_all {
  width: 100vw;
  height: 100vh;
  left: 0;
  top: 0;
  position: fixed;
  display: grid;
  place-items: center;
  align-items: center;
  place-content: center;
  align-self: center;
}

.center_most {
    margin-top: -100px;
  display: grid;
  place-items: center;
  align-items: center;
  place-content: center;
  align-self: center;
}

#login_button {
    width: 100%;
}

.tk_logo {
  width: 300px;
  height: auto;
}

button {
  margin-top: 10px;
  padding: 10px 15px;
  background-color: #F1AE43;
  transition: background-color 0.2s ease-out;
  color: white;
  border: none;
  cursor: pointer;
}

button:hover {
  background-color: #DB9C3D;
}

tr:nth-child(even) {
  background-color: #f9f9f9;
}

tr:hover {
  background-color: #f1f1f1;
}

.checkbox-cell {
  text-align: center;
}