.m_container {
  height: 355px;
  box-shadow: 0 0 10px rgb(0 0 0);
  width: 900px;
  margin: auto;
  position: relative;
}
.upper_div {
  width: 100%;
  display: flex;
  height: 82%;
}
#header_img {
  height: 46px;
  margin-left: -12px;
  padding-right: 10px;
}
.lower_div {
  height: 18%;
  cursor: pointer;
  width: 100%;
  text-align: center;
  box-shadow: 0 0 10px rgb(0 0 0);
  padding-top: 11px;
  background: #7b10ff;
  font-size: 28px;
  color: white;
  font-family: sans-serif;
  font-weight: bold;
}
.right_div {
  height: 100%;
  width: 50%;
  overflow: auto;
}
.left_div {
  height: 100%;
  width: 50%;
  padding: 28px;
}
.bordered_div {
  height: 100%;
  display: flex;
  width: 100%;
  border: 2px dashed rgba(170, 170, 170);
  overflow: auto;
  place-items: center;
  font-weight: bold;
  font-size: 200%;
  color: rgba(220, 220, 220);
  padding: 20px;
  justify-content: center;
}
.right_div p {
  font-size: 18px;
  margin-top: 25px;
  color: rgba(180, 180, 180);
}
.right_div input {
  font-size: 18px;
  font-weight: bold;
  height: 45px;
  border-radius: 5px;
  width: 100%;
  outline: none;
  border: 2px solid rgba(200, 200, 200);
  margin-top: -10px;
  padding-left: 20px;
}
.opt {
  width: 89%;
  margin: auto;
  height: 100%;
  padding-right: 17px;
  padding-top: 22px;
}
.button_div {
  height: auto;
  width: 66%;
  margin: auto;
  margin-top: 32px;
  display: flex;
}
#digit_value {
  height: 100px;
  width: 100%;
  border-radius: 5px;
  border: 1px solid rgba(190, 190, 190);
  outline: none;
  padding-left: 15px;
  padding-top: 15px;
}

.b {
  border: 2px solid rgba(200, 200, 200);
  width: 109px;
  margin: auto;
  background: rgba(220, 220, 220);
  color: rgba(100, 100, 100);
  padding-top: 9px;
  height: 45px;
  font-weight: bold;
}
.bordered_div div {
  height: 36px;
  width: auto;
}
.range_div {
  width: 100%;
  display: flex;
  height: 50px;
  margin-top: 21px;
}
.range_div input {
  width: 48%;
  height: 100%;
  margin: auto;
  margin-top: 1px;
  font-size: 16px;
}
.range_div input::placeholder {
  color: rgba(180, 180, 180);
  font-weight: 400;
}
.error_bar {
  height: 55px;
  width: 100%;
  background: #f8d7da;
  position: absolute;
  color: #721c24;
  font-weight: bold;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  justify-content: center;
  place-items: center;
  font-size: 17px;
  display: none;
}

@media (max-width: 984px) {
  .m_container {
    width: 92%;
  }
  .bordered_div {
    font-size: 160%;
  }
}
@media (max-width: 765px) {
  .m_container {
    width: 92%;
    height: auto;
  }
  .upper_div {
    display: block;
  }
  .left_div {
    width: 100%;
  }
  .right_div {
    width: 100%;
  }
  .opt {
    width: 89%;
    margin: auto;
    height: 100%;
    padding-bottom: 25px;
    padding-right: 0px;
  }
  .lower_div {
    padding-bottom: 8px;
  }
}