#keisanrenshuu {
  width: 950px;
  height: 250px;
  margin: 0 auto;
}


form#keisan {
  max-width: 95%;
  width: 310px;
  height: 230px;
  margin-top:10px;
  /* margin: 0 auto; */
  color: #000;
  text-align: center;
  padding: 15px 0 8px;
  border-radius:8px;
  border: solid 2px #003eba;
  position: relative;
  background: #fff;
}

form#keisan #f1 {
  margin: 0 auto;
}

form#keisan #f1 {
  padding: 10px;
}

form#keisan #k1,
form#keisan #k2,
form#keisan #k3 {
  margin: 0px 8px 0;
  padding: 10px;
}

form#keisan #f4,
form#keisan #f5 {
  display: inline-block;
  margin-top:10px;
  margin-bottom:10px;
}

form#keisan * {
  font-size: 22px;
  margin-top: 3px;
  margin-bottom: 3px;
}

form#keisan h2 {
font-size:18px;
font-weight:bold;
position: relative;
background: #dfefff;
box-shadow: 0px 0px 0px 5px #dfefff;
border: dashed 2px white;
padding: 0.2em 0.5em;
color: #000;
width: 85%;
margin: 2px auto 15px;
}

form#keisan h2:after {
position: absolute;
content: '';
left: -7px;
top: -7px;
border-width: 0 0 15px 15px;
border-style: solid;
border-color: #fff #fff #a8d4ff;
box-shadow: 1px 1px 1px rgba(0, 0, 0, 0.15);
}

form#keisan #m1 {
  font-size:12px;
  padding:5px;
  position: absolute;
  top:17px;
  right:18px;
}


form#keisan #m2 {
  font-size:12px;
  padding:5px;
  position: absolute;
  top:-5px;
  left:5px;
  width: 90%;
  height: 95%;
  background-color:#fff;
  border-radius:8px;
  border: solid 2px #003eba;
  text-align: center;
  line-height:180%;
}

form#keisan #m2 input {
  line-height:150%;
  margin: 0 5px 0 0;
}

form#keisan #m2 label {
    font-size: 16px;
    margin: 5px 10px 0 0;
    white-space: nowrap;
    display: inline-block;
}

form#keisan #m2 h2 {
  margin-bottom:10px;
}

form#keisan #m2 .close {
  font-size:12px;
  padding:5px;
  position: absolute;
  bottom:0;
  right: 10px;
  text-align: center;
  margin-bottom:4px;
}

form#keisan #counter {
  position: absolute;
  bottom:0px;
  left:10px;
  font-size:24px;
}

form#keisan #f2 {
    font-size: 28px;
    margin-top: -4px;
    margin-bottom: 10px;
    background-color: transparent;
    /*padding: 13px 0 20px;*/
    padding: 32px 0 1px;
    color: #fff;
    background: url(image/557738.jpg);
    background-size: cover;
    background-position: bottom;
    line-height:100%;
    min-height: 63px;
}

form#keisan #f4 {
font-size: 18px;
margin-top: 2px;
margin-bottom: 8px;
font-weight: bold;
letter-spacing: 0px;
}


@media (max-width: 969px) {
  #keisanrenshuu {
    width: 100%;
    height: 250px;
  }

  form#keisan {
    margin: 5px auto 0;
  }
}

@media (min-width: 970px) {
  #keisanrenshuu {
    background: url(https://www.keisan-mondai.com/wp-content/uploads/2015/08/keisan-header6.png);
  }
}

/* 個別問題 */
form#keisan.q8 #f2 {
    padding: 13px 0 20px;
}

form#keisan.q101 #f2,
form#keisan.q102 #f2,
form#keisan.q103 #f2 {
    font-size: 56px !important;
    padding: 18px 0 14px;
}

form#keisan.q101.ans #f2,
form#keisan.q102.ans #f2,
form#keisan.q103.ans #f2 {
    font-size: 28px !important;
    padding: 20px 0 13px !important;
}