#calculator-container {
    background-color: #f0f0f0;
    border: 1px solid #ccc;
    border-radius: 5px;
    padding: 10px;
    width: 336px;
    box-sizing: border-box;
    margin: 0 auto;
    text-align: left;
  }
  
  #calculator-container #recoil_calculator {
    font-size: 16px;
    line-height: 1.5;
  }
  
  #calculator-container label {
    align-items: center;
    margin-left: 20px;
    display: inline-block;
  }
  
  #calculator-container label > span {
    flex-basis: 100px;
  }
  
  #calculator-container input[type="number"],
  #calculator-container select {
    display: inline-block;
    padding: 5px;
    width: 130px;
    height: 35px;
    margin-top: 10px;
    margin-bottom: 10px;
    margin-left: 20px;
    margin-right: 20px;
    box-sizing: border-box;
    text-align: left;
    vertical-align: middle;
  }
  
  #calculator-container select {
    width: 150px;
    margin-bottom: 20px;
    margin-left: 55px;
    text-align: left;
    vertical-align: middle;

  }
  
  #calculator-container span {
    display: inline-block;
  }

#calculateBtn {
    display: inline-block;
    padding: 12px 24px;
    background-color: #4865B2;
    color: white;
    font-size: 18px;
    font-weight: bold;
    border-radius: 10px;
    width: 100%;
    margin-top: 20px !important; 
    margin-bottom: 20px !important; 
  }
  
  #calculateBtn:hover {
    background-color: #2E4372;
    cursor: pointer;
  }
  
  #resetBtn {
    display: inline-block;
    padding: 12px 24px;
    background-color: #4865B2;
    color: white;
    font-size: 18px;
    font-weight: bold;
    border-radius: 10px;
    width: 100%;
    margin-top: 10px;
  }
  
  #resetBtn:hover {
    background-color: #2E4372;
    cursor: pointer;
  }

#calculateBtn, #resetBtn {
    display: inline-block;
    margin: 0 auto;
    margin-top: 0;
    margin-bottom: 0;
    border: 1px solid #ffffff;
}

#outputContainer {
    display: flex;
    flex-wrap: wrap;
    display: none;
}
    
#recoilVelocityContainer,
#recoilEnergyContainer {
    margin-top: 1px;
    margin-bottom: 1px;
    border: 2px solid #ccc;
    padding: 1px;
    border-radius: 10px;
    text-align: center;
    font-size: 20px;
    font-weight: bold;
}

#recoilVelocityOutput,
#recoilEnergyOutput {
    margin-top: 1px;
    margin-bottom: 1px !important;
    font-size: 16px;
    font-weight: bold;
    text-align: center;
}